# What is the order of the callbacks being fired when 2 callbacks share same inputs

**URL:** <https://community.plotly.com/t/what-is-the-order-of-the-callbacks-being-fired-when-2-callbacks-share-same-inputs/16239>\
**Category:** Dash Python\
**Created:** [November 29, 2018, 10:20pm UTC](https://community.plotly.com/t/what-is-the-order-of-the-callbacks-being-fired-when-2-callbacks-share-same-inputs/16239 "2018-11-29T22:20:17Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![SagarK](https://avatars.discourse-cdn.com/v4/letter/s/a4c791/32.png) [@SagarK](https://community.plotly.com/u/SagarK)\
**Post date:** [November 29, 2018, 10:20pm UTC](https://community.plotly.com/t/what-is-the-order-of-the-callbacks-being-fired-when-2-callbacks-share-same-inputs/16239/1 "2018-11-29T22:20:17Z")

</div>

Hi,  
I have 2 callbacks, 1 with 4 inputs and the other with a single input which is shared with the first callback. I want to know if there is any order for the callbacks being fired which share same inputs.

Thanks

---

<div class="post-metadata">

**Author:** ![chriddyp](https://sea2.discourse-cdn.com/flex024/user_avatar/community.plotly.com/chriddyp/32/16855_2.png) [@chriddyp](https://community.plotly.com/u/chriddyp)\
**Post date:** [November 29, 2018, 11:34pm UTC](https://community.plotly.com/t/what-is-the-order-of-the-callbacks-being-fired-when-2-callbacks-share-same-inputs/16239/2 "2018-11-29T23:34:05Z")

</div>

There isn’t any order. If you run with multiple workers, they could even be executed in parallel (one by each each worker)